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it has been long known that google avoids to manually tweak its search results but rather uses specific cases to tweak their algorithm – or should i say algorithms, as like all successful web-application-driven companies they constantly improve quality by comparing live data from synchronously deployed variations of algo and interface.

now finally a well kept secret has been disclosed by an anonymous unfaithful – how exactly google evaluates different algorithms: they recruit people from all over the world who compare and rate search results based on algo variations on eval.google.com (nothing to be seen there for normal people), from their homes. see also this flash movie.

if you are interested in in-depth detail read the small text on these screenshots. the second one for example seems to suggest that google is working on a database of query refinements that they – as i’d guess – eventually will suggest on results pages, like in “try adding XYZ to your search“. (via nico)


 

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